public override void OnActionExecuting(HttpActionContext actionContext)
{
var unitOfWork = new UnitOfWork(sessionFactory);
int hashCode = actionContext.GetHashCode();
requestToUnitOfWorkDictionary.Add(new KeyValuePair <int, IUnitOfWork>(hashCode, unitOfWork));
Context.SetUnitOfWork(unitOfWork);
//var filter in actionContext.ActionDescriptor.GetCustomAttributes<Transactional>(false))
}